PubMed Health⌕ Search

Biomedical subjects

T E Jacobson

Publications and source records attributed to T E Jacobson.

13 recordsLinked to original sources
PubMed1994

Rotational path partial denture design: a 10-year clinical follow-up--Part I.

A conventional removable partial denture that uses a straight path of placement requires that all rests and clasps be seated simultaneously. The incorporation of a dual, curved, or rotational path of placement permits one portion of the framework to be seated first, followed by the remainder of the framework. This procedure usually permits a reduction in the number of clasps in the framework without compromising the biomechanical properties of the prosthesis. Rotational path designs that eliminate clasps reduce tooth coverage by components and often enhance esthetics, thereby contributing to improved patient acceptance.

Dental Abutments↗
PubMed1994

Rotational path partial denture design: a 10-year clinical follow-up--Part II.

A review of the rotational path removable partial denture design concept has been presented. The rigid direct retainers used in these designs satisfy the basic requirements of clasp designs. The reported results of a survey of the members of The Academy of Prosthodontics may provide insight into the reasons for reluctance on the part of some practitioners to use the concept more often when indicated. Possible reasons include the following: lack of sufficient understanding of the concept, difficulty in obtaining knowledgeable laboratory support, absence of documented evidence of long-term clinical success, and a general lack of confidence in the efficacy of the procedure as described in the literature. This article presents references that are available to improve the understanding of technicians and dentists with regard to the rotational path concept. In addition, several patients followed up for 10 or more years demonstrated long-term clinical success.

Attitude of Health Personnel↗
PubMed1988

Bond strength of 4-META acrylic resin denture base to cobalt chromium alloy.

This study was designed to compare the bond strength of a conventional poly(methyl methacrylate) acrylic resin denture base (Lucitone 199) with a recently developed acrylic resin base containing 4-META (Meta-Dent) to CoCr metal alloy by using various designs representative of clinical situations. The mechanical bond strength of Lucitone 199 resin was compared with the chemical and combination chemical and mechanical bond strength of Meta-Dent resin. The following conclusions may be extrapolated from the results. 1. The highest bond strength was observed between Meta-Dent resin and the plain flat metal plate. 2. The second highest bond strength was observed between Meta-Dent resin and the flat metal plate with two posts. 3. The lowest bond strengths were observed between Meta-Dent resin and the samples containing mesh retentive mechanisms. 4. The mean bond strength of Lucitone 199 resin was highest for the flat metal plate with two posts, followed by the large mesh. Bond strength with the small-mesh samples was lowest. These differences were not statistically significant. 5. The mean bond strengths of Meta-Dent resin to flat metal plates with or without posts was significantly higher than any of the Lucitone 199 resin metal bond strengths, to the 99% confidence level. Additional studies will be necessary to confirm the validity of these conclusions with respect to clinical removable partial dentures. Longitudinal investigations will be required to reveal clinical performance of these resin systems.

Acrylic Resins↗
PubMed1983

Removable partial dentures with rotational paths of insertion: problem analysis.

Removable partial dentures designed to use a rotational path of insertion are technique sensitive. When indicated and when the principles discussed are followed, a denture that uses a rotational path can be highly successful. Tooth coverage can be decreased, which is an advantage in plaque control, caries reduction, and periodontal support. Esthetics can be improved without resorting to intracoronal retainers, and the number of components subject to distortion is reduced. When properly designed and constructed, use of a rotational path of insertion can result in a removable partial denture that is strong, hygienic, and esthetic.

Dental Arch↗
PubMed1983

A contemporary review of the factors involved in complete dentures. Part III: support.

Dentists must base their technique on an understanding of the biologic aspects of the relationship between the denture base and supporting tissues. Those tissues must be able to tolerate functional stresses without promoting patient discomfort and should be recorded in such a manner that these areas provide complete denture support. Anatomic regions that satisfy the requirements for providing primary support should make positive contact with the denture base under functional loading. Those that are less resistant to long-term changes or are unable to tolerate stress should be relieved of excessive contact with the denture base. Selection of those regions that should provide primary and secondary support depends on the anatomic variations unique to each patient.

Alveolar Process↗
PubMed1982

Rotational path removable partial denture design.

A detailed description of a rotational path of insertion design for removable partial dentures has been presented. By minimizing the use of conventional clasps, this technique offers some advantages. Rotational path designs may minimize adverse periodontal response to a removable partial denture by reducing plaque accumulation and may be applied in esthetically demanding situations. The design concept involves the use of rigid retentive components that gain access to undercut areas through a rotational path of insertion. These rigid components satisfy the basic requirements of conventional direct retained design.

Denture Design↗
PubMed1982

Satisfying esthetic demands with rotational path partial dentures.

A description of the rotational path design concept for removable partial dentures has been presented. Through the combined efforts of the clinician and laboratory technician, a rotational path partial denture can be developed that meets the basic mechanical requirements and eliminates certain clasp arms. The primary advantages of this design include less display of metal, enhancing the patient's appearance, and decreased tooth and tissue coverage by partial denture framework components.

Dental Abutments↗
PubMedDate not supplied

The significance of adhesive denture base resin.

This article reviews the problems that occur at the metal-resin interface of removable partial dentures. The absence of a chemical bond between the denture base resin and the base metal alloy results in a potential for microleakage and bond failure at the junction. Recent development of a denture base resin that incorporates 4-META has been reported, primarily in the Japanese dental literature. The primary advantage of the 4-META resin system involves its bond to base metal alloys used in removable partial prosthodontics.

Acrylic Resins↗